"Oh, Merlin that one," Charlie said enthusiastically. "That was one of mine, well I was running the team. It took us what, six years to work it out because of the seasonal patterns?" he said, shuffling through his scrolls again. "Here, read this," he said, finding the relevant scroll and handing it to Rolf. "There's a load of notes on it too but that's everything summed up properly. You would not believe the uproar that one caused when I announced it. I thought my boss was going to hex me!"
He sat back for a few seconds to sip at his pint, not even trying to suppress his grin at being able to talk about dragons to someone who knew their stuff.